Demountable rim



DEMOUNTABLE RIM. APPLICATION HLED 1AN.29,1921.

1,408,173, i Patented Feb. 28, 1922.

Z3 "v "r fg Wm' mifzm UNITED STATES PATENT OFFICEQ A.N'DREW C. 'DAML 0F NEW YORK, N. Y.

DEMOUNTABLE RIIM.

To all whom tammy concern.:

Be it known that I, ANDREW C. DAM, a citizen ot' the United States, residing at New York, in the county of New York and State of New York, haveinventedcertain new and useful Improvements -in ,Demountable Rims,

operative assembly and having lockingmeans associated with them, whereby the demountable rimv isaligned or centered on the wheel and securely '-fastened. in cooperative relation .with the lixed rim, lthe devifnountable rim and its locking-means being adapted tor removal at the outside of the wheel. when the wheel is arranged on a vehicle.

Fig. 1 is a side elevation ot a wheel hav ing demountable holding-means for a tire, embodying this invention.

Fig. 2 is ay similar view showingthe other side of the wheel.

Fig. 3 is a transverse section of the telly and demountable holding-means, taken in the dotted line 1 1, Fig. l.

Fig. 4 is a fragmentaryA detail, in plan view, oit the rims.

Fig. 5 is a transverse sectional view of a telly, and modified form of demountable holding-means arranged thereon.

The wheel comprising the spokes 10 and telly 12, is or may be of any usual or suitable construction, so far as my invention is concerned.

On the periphery of the telly 12, ythere is arranged a fixed rim 15, it being bolted or otherwise rigidly secured thereto. This fixed rim is or may be made of a width corresponding to the width of the telly, or thereabout. It has arranged on one of its edge-portions and extending, preferably, entii'ely around it, a stop iange 16, which is projected outward. It has its other edgeportion formed with an inclined portion 17, which is designed to extend to the side of the felly, and with an annular recessed portion formed of the walls 18, 19, and 20, which recessed portion extends inward toward the wheel axis, and over the side of the telly, at the outside of the wheel, assuming the wheel to be arranged on a vehicle.

Specification of Letters Patent. Patented Feb 28 -1922 `Appiicaoion ined January 29, l1921. i

Serial No. 441,038.

as-liere shown, it is made wider than the fixed rim, `and has its edge-portions extended outwardiy, las at 26, 26, and curved' or votherwise -formed for engagement with `a shoe or tire. Said rim 25 has on itsunder yside near one edge, and extended.,entirelyl `around it, an inwardly extended lrib-2`7 having an inclined iace28 on its inside forcengagement with the inclined ,iace or portion' 1T of the fixed rim to center or aligny the rim, and having an inclined face 29, on its outside for engagement witha locking-ring.`

The sideportion of the rib having' the inclined face L29, extends over thefrecessed edge-portion of the fixed rim, andis, there r `fore, arranged at the outside of the wheel,

when the wheel is arranged on aovehicle. Said rim 25 lalso has on its under `side an inwardly-extended flange 31, or it maybe a series oi lugs extended entirelyf around it,

adapted for engagement with the stop flangeA 16, on the fixed rim, thus to prevent lateral movement ot the demountable rim with respect to the ixed rim, in a direction towards the right, Fig.V 3, and tohold it againstdisplacement in such manner as to prevent any wedging action of the inclined-tace rib 27.

The locking-ring y35 is made as .an adjustable ring, and is adapted to be arranged in the recessed edge-portion of the fixed rim. It has a bevel faced rib or portion 36, at its outer edge, adapted for engagement with the inclined face 29 of the rib 27 on the demountable rim, thus to draw the deinount-V able rim into its tinal position and to hold it in place on the fixed rim by holding it against lateral relative movement with respect thereto, in a direction toward the left, Fig. 3. Said ring is made as an incomplete circle, and has arranged upon its end-portions a toggle-locking element, comprising two toggle members or links 37, 38, pivotally connected together, said members being pivotally connected their outer extremities to the corresponding ends ot' the incomplete ring. One of the toggle members or links is preferably made adjustable longitudinally, as shown, whereby ample adjustment is provided. The toggle-elements are preferably curved on an arc corresponding to the arc of curvature of the rim. When the toggle element is straightened, as shown in full lines Fig. l, it will be expanded and brought firmly into engagement with the inclined face 29 of the rib 2T, and will thus hold the demountable rim 25 firmly in place. Vhen the toggle is broken for disengagement from said rib for the removal of the demountable rim 25, the locking-ring will contract slightly, and draw further into the recess in the recessed portion of the fixed rim, andsuch con-v tractile movement will be sufficient to enable the demountable rim to pass over it, and to be drawn off of the fixed rim, the recess of said recessed edge-portion being made deepV enough to provide space for the contractile movement of the ring. Said recess, if desired, may have holes at the bottom at intervals throughout its length to enable dirt ment in an inward direction.

I claim The combination with a wheel, of a fixed rim on the felly, a demountable rim adapted tobe arranged on and secured to said fixed rim, and an expansible ring carried by said wheel and expansible into engagement with said demountable rim to force said rim on said fixed rim and lock it thereon, said rims having contacting supporting portions ad- Y jacent an edge thereof whereby that edge of Vwedge surface of said expansible rin the demountable rim is supported by said fixed rim and whereby said edge is guided on said fixed rim as said demountable rim is being arranged and secured on said fixed rim, said other edge Vof said demountable and fixed rims being provided with co-acting wedging surfaces which serve to tightly hold said demountable rim on said fixed rim and support that edge of said demountable rim by said fixed rim, said wedging surfaces and supporting portions receiving the entire weight supported by the wheel, said fixed rim having a grooved edge portion adjacent the vwedge surface thereof, and said expansible ring arranged and held in said groove, said groove having substantially parallel side walls which closely fit and support said expansible ring, the top inner portion of said ring having a wedge surface, and said demountable rim having a co-acting wedge surface adjacent said first wedge and supporting surface adapted to be engaged by the to force said demountable rim on said xed rim, the arrangement being such that the coactin supporting surfaces and portions of said emountable and'fixed rims support the entire weight supported by the wheel, with i the two co-acting wedging surfaces forming means whereby the demountable rim is held secured on said fixed rim, and said expanded ring forming a circular flange carried by said fixed rim to positively lock lsaid demountable rim on said fixed rim.

In testimony whereof, I affix my signature. Y

ANDREW o. DAM. 

